HA: Client should fail if a failover occurs which switches block pool ID
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Key: HDFS-2811
URL: https://issues.apache.org/jira/browse/HDFS-2811
Project: Hadoop HDFS
Issue Type: Sub-task
Components: ha, hdfs client, name-node
Affects Versions: HA branch (HDFS-1623)
Reporter: Aaron T. Myers
Making sure that the client is talking to an NN with the same block pool ID as
the one it was previously talking to seems like a good sanity check.
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